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"""
Dataset Handler Module
Handles dataset import and exploration functionality for ACE-Step training.
This module provides a placeholder implementation for dataset operations
when the full training dataset dependencies are not available.
Note: Full dataset functionality requires Text2MusicDataset which may not be
included in the basic installation to reduce dependencies.
"""
from typing import Optional, Tuple, Any, Dict
class DatasetHandler:
"""
Dataset Handler for Dataset Explorer functionality.
Provides interface for dataset import and exploration features in the Gradio UI.
When training dependencies are not available, returns appropriate fallback responses.
"""
def __init__(self):
"""Initialize dataset handler with empty state"""
self.dataset = None
self.dataset_imported = False
def import_dataset(self, dataset_type: str) -> str:
"""
Import dataset (currently disabled in base installation)
Args:
dataset_type: Type of dataset to import (e.g., "train", "test", "validation")
Returns:
Status message indicating dataset import is disabled
Note:
This is a placeholder implementation. Full dataset support requires:
- Text2MusicDataset dependency
- Training data files
- Additional configuration
"""
self.dataset_imported = False
return f"⚠️ Dataset import is currently disabled. Text2MusicDataset dependency not available."
def get_item_data(self, *args, **kwargs) -> Tuple:
"""
Get dataset item data (placeholder implementation)
Args:
*args: Variable arguments (ignored in placeholder)
**kwargs: Keyword arguments (ignored in placeholder)
Returns:
Tuple of placeholder values matching the expected return format:
(caption, lyrics, language, bpm, keyscale, ref_audio, src_audio, codes,
status_msg, instruction, duration, timesig, audio1, audio2, audio3,
metadata, task_type)
Note:
Returns empty/default values since dataset is not available.
Real implementation would return actual dataset samples.
"""
return (
"", # caption: empty string
"", # lyrics: empty string
"", # language: empty string
"", # bpm: empty string
"", # keyscale: empty string
None, # ref_audio: no audio file
None, # src_audio: no audio file
None, # codes: no audio codes
"❌ Dataset not available", # status_msg: error indicator
"", # instruction: empty string
0, # duration: zero
"", # timesig: empty string
None, # audio1: no audio
None, # audio2: no audio
None, # audio3: no audio
{}, # metadata: empty dict
"text2music" # task_type: default task
)
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